As someone who's done 20 years of professional C++ development along with 15 years of professional python development, as well as 10 years of professional javascript/react development on a systems that go across the stack from the lowest level of sensors and embedded systems to the browser front end I know what I'm talking about.
I've also done rust, go, erlang, java, and I've also done a ton of haskell as well as lisp. I've been all over the place likely more than you.
>The difference between a junior and senior developer has nothing to do with the language. Regardless of the language the engineering fundamentals are the same.
This is beyond wrong. You've done C, you've done rust, then you must know that the fundamentals of systems programming is much more wider ranging then python. What's a pointer? What's a unique pointer or shared pointer? What's move semantics? What's the difference between stack allocation and heap allocation? What's an R value vs. L value? What's a borrowed value? What's virtual memory? What's an interface (arguably with the advent of annotations types are not more relevant in python but there is huge class of senior python programmers who don't use types)
The above are programming fundamentals that a python programmer never needs to know. A python programmer can go from junior to principal and not need to KNOW any of the above simply because python abstracts these concepts away from the user. The fact that a python programmer doesn't need to know any of these things makes it significantly easier. For web apps a company is most efficient if they hire a mid level python developer over some principle python developer with 10 years of experience.
This is not the case for a language like C++